Palaeo-moisture evolution in monsoonal Central Asia during the last 50,000 years

The late-Quaternary climate history of monsoonal Central Asia was inferred from 75 palaeoclimatic records which provide information about moisture conditions in the last 50 ka (or part of this period). Wet conditions occurred during middle and late Marine Isotope Stage 3, while the Last Glacial Maxi...

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Published in:Quaternary Science Reviews
Main Author: Herzschuh, Ulrike
Format: Article in Journal/Newspaper
Language:English
Published: 2006
Subjects:
Online Access:https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/31422
https://doi.org/10.1016/j.quascirev.2005.02.006
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spelling ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:31422 2023-05-15T16:39:20+02:00 Palaeo-moisture evolution in monsoonal Central Asia during the last 50,000 years Herzschuh, Ulrike 2006 https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/31422 https://doi.org/10.1016/j.quascirev.2005.02.006 eng eng https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/31422 https://doi.org/10.1016/j.quascirev.2005.02.006 info:eu-repo/semantics/closedAccess Institut für Biochemie und Biologie article doc-type:article 2006 ftubpotsdam https://doi.org/10.1016/j.quascirev.2005.02.006 2022-07-28T20:44:34Z The late-Quaternary climate history of monsoonal Central Asia was inferred from 75 palaeoclimatic records which provide information about moisture conditions in the last 50 ka (or part of this period). Wet conditions occurred during middle and late Marine Isotope Stage 3, while the Last Glacial Maximum (LGM) was characterized by dry climate conditions in the region. A stepwise climate amelioration is suggested by the climate records following the LGM. Several climate signals of this period, which were reported from high-latitude ice core records, are preserved in archives from monsoonal Central Asia as well. During the early Holocene, high effective moisture was inferred from most records from the area dominated by the Indian Monsoon (e.g. the Tibetan Plateau) suggesting that Holocene optimal climate conditions occurred there during this period. In contrast, areas which are dominated by the South-East Asian monsoon (SE Monsoon) and the Westerlies (in north-western and north-central China, Mongolia) do not uniformly show an early Holocene climate optimum. For this area optimal conditions prevailed during the mid-Holocene. These apparent contradictions can possibly be explained by the regional uplift and descent of air masses in the Holocene. During the early Holocene, strengthened insolation possibly caused an enhanced low-level convergence over the Tibetan Plateau which led to the intensification of the summer monsoon. The strong air uplift caused intensified precipitation and air divergence in the upper troposphere over the Tibetan Plateau. The areas adjacent to the north therefore experienced an intensified descent of air masses and consequently increased aridity. The majority of the palaeoclimatic records suggest reduced effective moisture since the late Holocene in the region. Article in Journal/Newspaper ice core University of Potsdam: publish.UP Indian Quaternary Science Reviews 25 1-2 163 178
institution Open Polar
collection University of Potsdam: publish.UP
op_collection_id ftubpotsdam
language English
topic Institut für Biochemie und Biologie
spellingShingle Institut für Biochemie und Biologie
Herzschuh, Ulrike
Palaeo-moisture evolution in monsoonal Central Asia during the last 50,000 years
topic_facet Institut für Biochemie und Biologie
description The late-Quaternary climate history of monsoonal Central Asia was inferred from 75 palaeoclimatic records which provide information about moisture conditions in the last 50 ka (or part of this period). Wet conditions occurred during middle and late Marine Isotope Stage 3, while the Last Glacial Maximum (LGM) was characterized by dry climate conditions in the region. A stepwise climate amelioration is suggested by the climate records following the LGM. Several climate signals of this period, which were reported from high-latitude ice core records, are preserved in archives from monsoonal Central Asia as well. During the early Holocene, high effective moisture was inferred from most records from the area dominated by the Indian Monsoon (e.g. the Tibetan Plateau) suggesting that Holocene optimal climate conditions occurred there during this period. In contrast, areas which are dominated by the South-East Asian monsoon (SE Monsoon) and the Westerlies (in north-western and north-central China, Mongolia) do not uniformly show an early Holocene climate optimum. For this area optimal conditions prevailed during the mid-Holocene. These apparent contradictions can possibly be explained by the regional uplift and descent of air masses in the Holocene. During the early Holocene, strengthened insolation possibly caused an enhanced low-level convergence over the Tibetan Plateau which led to the intensification of the summer monsoon. The strong air uplift caused intensified precipitation and air divergence in the upper troposphere over the Tibetan Plateau. The areas adjacent to the north therefore experienced an intensified descent of air masses and consequently increased aridity. The majority of the palaeoclimatic records suggest reduced effective moisture since the late Holocene in the region.
format Article in Journal/Newspaper
author Herzschuh, Ulrike
author_facet Herzschuh, Ulrike
author_sort Herzschuh, Ulrike
title Palaeo-moisture evolution in monsoonal Central Asia during the last 50,000 years
title_short Palaeo-moisture evolution in monsoonal Central Asia during the last 50,000 years
title_full Palaeo-moisture evolution in monsoonal Central Asia during the last 50,000 years
title_fullStr Palaeo-moisture evolution in monsoonal Central Asia during the last 50,000 years
title_full_unstemmed Palaeo-moisture evolution in monsoonal Central Asia during the last 50,000 years
title_sort palaeo-moisture evolution in monsoonal central asia during the last 50,000 years
publishDate 2006
url https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/31422
https://doi.org/10.1016/j.quascirev.2005.02.006
geographic Indian
geographic_facet Indian
genre ice core
genre_facet ice core
op_relation https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/31422
https://doi.org/10.1016/j.quascirev.2005.02.006
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container_title Quaternary Science Reviews
container_volume 25
container_issue 1-2
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